CVE-2026-47747

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inference. In versions prior to master-584-0a7ae07, the pickle .ckpt parser in src/model.cpp contained a heap buffer overflow vulnerability in the BINUNICODE opcode handler. The issue was caused by sign confusion on the opcode length field. A crafted .ckpt file could trigger memcpy with a very large length derived from a negative signed value, causing immediate heap corruption. The issue has been resolved in version master-584-0a7ae07. If developers are unable to immediately update their applications they can work around this issue by only loading .ckpt checkpoint files from trusted sources and preferring trusted model sources and safer formats such as .safetensors where possible.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
7.7%
KEV
Not listed

Published

June 16, 2026

Last Modified

June 25, 2026

Advisory Details (3)

Auto-updated Jun 16, 2026
🔬 Proof of concept available. Patch available. Sources: github_pr, github, github_commit.
github Patch Available🟡 PoC Available

Heap buffer overflow in BINUNICODE parsing for PyTorch checkpoint files · Advisory · leejet/stable-diffusion.cpp · GitHub

https://github.com/leejet/stable-diffusion.cpp/security/advisories/GHSA-mghm-5mqc-pwmp
github_pr

feat: add restricted torch legacy checkpoint loading

Fix merged in leejet/stable-diffusion.cpp PR #1443 on 2026-04-19 — awaiting tagged release

https://github.com/leejet/stable-diffusion.cpp/pull/1443
github_commit

commit 0a7ae07f948e (leejet/stable-diffusion.cpp)

Fix landed in leejet/stable-diffusion.cpp commit 0a7ae07f948e — awaiting tagged release

https://github.com/leejet/stable-diffusion.cpp/commit/0a7ae07f948eff4611968a65a22bd7c7031ad74f

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 93× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-14 01:55 UTCEG score recompute
  2. 2026-07-13 22:30 UTCEPSS rescore
  3. 2026-07-13 14:46 UTCEG score recompute
  4. 2026-07-13 06:13 UTCEPSS rescore
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  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-11 06:51 UTCEG score recompute
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  15. 2026-07-09 19:10 UTCEPSS rescore
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  19. 2026-07-08 09:53 UTCEG score recompute
  20. 2026-07-07 22:44 UTCEG score recompute
  21. 2026-07-07 13:46 UTCEPSS rescore
  22. 2026-07-07 11:35 UTCEG score recompute
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  24. 2026-07-06 16:27 UTCEPSS rescore
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  1. 2026-07-06 02:23 UTCEPSS rescore
  2. 2026-07-05 19:52 UTCEG score recompute
  3. 2026-07-05 08:41 UTCEG score recompute
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  5. 2026-07-04 20:15 UTCEG score recompute
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  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-03 16:06 UTCEG score recompute
  9. 2026-07-03 04:56 UTCEG score recompute
  10. 2026-07-02 17:30 UTCEG score recompute
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  13. 2026-07-01 15:07 UTCEPSS rescore
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  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-30 20:53 UTCEG score recompute
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  18. 2026-06-29 22:36 UTCEG score recompute
  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-29 14:06 UTCEPSS rescore
  21. 2026-06-29 11:28 UTCEG score recompute
  22. 2026-06-29 00:19 UTCEG score recompute
  23. 2026-06-28 14:07 UTCEPSS rescore
  24. 2026-06-28 13:10 UTCEG score recompute
  25. 2026-06-28 04:56 UTCEPSS rescore
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  27. 2026-06-28 02:02 UTCEG score recompute
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  30. 2026-06-27 03:08 UTCEPSS rescore
  31. 2026-06-26 16:34 UTCEG score recompute
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  34. 2026-06-25 13:49 UTCEPSS rescore
  35. 2026-06-25 07:06 UTCEG score recompute
  36. 2026-06-24 19:56 UTCEG score recompute
  37. 2026-06-24 14:05 UTCEPSS rescore
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  39. 2026-06-23 21:33 UTCEPSS rescore
  40. 2026-06-23 21:33 UTCEPSS rescore
  41. 2026-06-23 21:08 UTCEG score recompute
  42. 2026-06-23 09:54 UTCEG score recompute
  43. 2026-06-22 22:43 UTCEG score recompute
  44. 2026-06-22 14:25 UTCEPSS rescore
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  46. 2026-06-22 11:33 UTCEG score recompute
  47. 2026-06-22 00:24 UTCEG score recompute
  48. 2026-06-21 14:56 UTCEPSS rescore
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  50. 2026-06-21 13:15 UTCEG score recompute
  51. 2026-06-21 01:59 UTCEPSS rescore
  52. 2026-06-21 01:59 UTCEPSS rescore
  53. 2026-06-21 01:49 UTCEG score recompute
  54. 2026-06-20 14:40 UTCEG score recompute
  55. 2026-06-20 03:29 UTCEG score recompute
  56. 2026-06-19 19:26 UTCEPSS rescore
  57. 2026-06-19 19:26 UTCEPSS rescore
  58. 2026-06-19 16:14 UTCEG score recompute
  59. 2026-06-19 04:58 UTCEG score recompute
  60. 2026-06-18 17:52 UTCEPSS rescore
  61. 2026-06-18 17:52 UTCEPSS rescore
  62. 2026-06-18 17:48 UTCEG score recompute
  63. 2026-06-18 06:35 UTCEG score recompute
  64. 2026-06-17 19:24 UTCEG score recompute
  65. 2026-06-17 17:53 UTCEPSS rescore
  66. 2026-06-17 08:15 UTCEG score recompute
  67. 2026-06-16 21:07 UTCEG score recompute
  68. 2026-06-16 21:07 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-47747?
CVE-2026-47747 is a high vulnerability published on June 16, 2026. stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inference. In versions prior to master-584-0a7ae07, the pickle .ckpt parser in src/model.cpp contained a heap buffer overflow vulnerability in the BINUNICODE opcode…
When was CVE-2026-47747 disclosed?
CVE-2026-47747 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47747 actively exploited?
CVE-2026-47747 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47747?
CVE-2026-47747 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-47747?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47747, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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